X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fendgame.h;h=e40b4050756fee4b2fb8489b1a599ae6004aba43;hp=011299ac6493c012f353102b1e34c0301c666308;hb=b5d5646c840d63710552fdaf2521a054dd3b8a18;hpb=d3c4618b3ac0e444ce3b9dd894b87f86a50863c5 diff --git a/src/endgame.h b/src/endgame.h index 011299ac..e40b4050 100644 --- a/src/endgame.h +++ b/src/endgame.h @@ -1,7 +1,7 @@ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glaurung author) - Copyright (C) 2008-2009 Marco Costalba + Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad Stockfish is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,111 +17,93 @@ along with this program. If not, see . */ - #if !defined(ENDGAME_H_INCLUDED) #define ENDGAME_H_INCLUDED -//// -//// Includes -//// +#include +#include #include "position.h" -#include "scale.h" -#include "value.h" +#include "types.h" -//// -//// Types -//// +/// EndgameType lists all supported endgames enum EndgameType { - // Evaluation functions - KXK, // Generic "mate lone king" eval - KBNK, // KBN vs K - KPK, // KP vs K - KRKP, // KR vs KP - KRKB, // KR vs KB - KRKN, // KR vs KN - KQKR, // KQ vs KR - KBBKN, // KBB vs KN - KmmKm, // K and two minors vs K and one or two minors - - // Scaling functions - KBPK, // KBP vs K - KQKRP, // KQ vs KRP - KRPKR, // KRP vs KR - KRPPKRP, // KRPP vs KRP - KPsK, // King and pawns vs king - KBPKB, // KBP vs KB - KBPPKB, // KBPP vs KB - KBPKN, // KBP vs KN - KNPK, // KNP vs K - KPKP // KP vs KP + // Evaluation functions + KXK, // Generic "mate lone king" eval + KBNK, // KBN vs K + KPK, // KP vs K + KRKP, // KR vs KP + KRKB, // KR vs KB + KRKN, // KR vs KN + KQKR, // KQ vs KR + KBBKN, // KBB vs KN + KNNK, // KNN vs K + KmmKm, // K and two minors vs K and one or two minors + + // Scaling functions + KBPsK, // KB+pawns vs K + KQKRPs, // KQ vs KR+pawns + KRPKR, // KRP vs KR + KRPPKRP, // KRPP vs KRP + KPsK, // King and pawns vs king + KBPKB, // KBP vs KB + KBPPKB, // KBPP vs KB + KBPKN, // KBP vs KN + KNPK, // KNP vs K + KPKP // KP vs KP }; -/// Template abstract base class for all special endgame functions + +/// Base and derived template class for endgame evaluation and scaling functions template -class EndgameFunctionBase { -public: - EndgameFunctionBase(Color c) : strongerSide(c), weakerSide(opposite_color(c)) {} - virtual ~EndgameFunctionBase() {} - virtual T apply(const Position&) = 0; +struct EndgameBase { + + typedef EndgameBase Base; + + EndgameBase(Color c) : strongerSide(c), weakerSide(opposite_color(c)) {} + virtual ~EndgameBase() {} + virtual T apply(const Position&) const = 0; + Color color() const { return strongerSide; } protected: Color strongerSide, weakerSide; }; -typedef EndgameFunctionBase EndgameEvaluationFunctionBase; -typedef EndgameFunctionBase EndgameScalingFunctionBase; - -/// Templates subclass for various concrete endgames +template +struct Endgame : public EndgameBase { -template -struct EvaluationFunction : public EndgameEvaluationFunctionBase { - explicit EvaluationFunction(Color c): EndgameEvaluationFunctionBase(c) {} - Value apply(const Position&); + explicit Endgame(Color c): EndgameBase(c) {} + T apply(const Position&) const; }; -template -struct ScalingFunction : public EndgameScalingFunctionBase { - explicit ScalingFunction(Color c) : EndgameScalingFunctionBase(c) {} - ScaleFactor apply(const Position&); -}; +/// Endgames class stores in two std::map the pointers to endgame evaluation +/// and scaling base objects. Then we use polymorphism to invoke the actual +/// endgame function calling its apply() method that is virtual. -//// -//// Constants and variables -//// - -extern EvaluationFunction EvaluateKXK, EvaluateKKX; // Generic "mate lone king" eval -extern EvaluationFunction EvaluateKBNK, EvaluateKKBN; // KBN vs K -extern EvaluationFunction EvaluateKPK, EvaluateKKP; // KP vs K -extern EvaluationFunction EvaluateKRKP, EvaluateKPKR; // KR vs KP -extern EvaluationFunction EvaluateKRKB, EvaluateKBKR; // KR vs KB -extern EvaluationFunction EvaluateKRKN, EvaluateKNKR; // KR vs KN -extern EvaluationFunction EvaluateKQKR, EvaluateKRKQ; // KQ vs KR -extern EvaluationFunction EvaluateKBBKN, EvaluateKNKBB; // KBB vs KN -extern EvaluationFunction EvaluateKmmKm; // K and two minors vs K and one or two minors: - -extern ScalingFunction ScaleKBPK, ScaleKKBP; // KBP vs K -extern ScalingFunction ScaleKQKRP, ScaleKRPKQ; // KQ vs KRP -extern ScalingFunction ScaleKRPKR, ScaleKRKRP; // KRP vs KR -extern ScalingFunction ScaleKRPPKRP, ScaleKRPKRPP; // KRPP vs KRP -extern ScalingFunction ScaleKPsK, ScaleKKPs; // King and pawns vs king -extern ScalingFunction ScaleKBPKB, ScaleKBKBP; // KBP vs KB -extern ScalingFunction ScaleKBPPKB, ScaleKBKBPP; // KBPP vs KB -extern ScalingFunction ScaleKBPKN, ScaleKNKBP; // KBP vs KN -extern ScalingFunction ScaleKNPK, ScaleKKNP; // KNP vs K -extern ScalingFunction ScaleKPKPw, ScaleKPKPb; // KP vs KP - -//// -//// Prototypes -//// - -extern void init_bitbases(); +class Endgames { + typedef std::map*> EFMap; + typedef std::map*> SFMap; + +public: + Endgames(); + ~Endgames(); + template T* get(Key key) const; + +private: + template void add(const std::string& keyCode); + + // Here we store two maps, for evaluate and scaling functions... + std::pair maps; + + // ...and here is the accessing template function + template const std::map& get() const; +}; #endif // !defined(ENDGAME_H_INCLUDED)